to find the common ratio, divide the second term by the first term.
(2/5) / (2/25) = 2/5 25/2 = 50/10 = 5
an = a1 r^(n-1)
n = term u want to find = 6
a1 = first term = 2/25
r = common ratio = 5
a6 = 2/25 5^(6-1)
q6 = 2/25 5^5
a6 = 2/25 * 3125
a6 = 6250/25
a6 = 250 <===
